| Citation: | ZENG Tao, WANG Zhaoli, XIONG Huajie, et al. Research on a fast Lagrangian algorithm for water droplet collection efficiency in complex configurations[J]. Journal of Aerospace Power, 2025, 40（7）：20220539 doi: 10.13224/j.cnki.jasp.20220539
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In order to solve the problems of low efficiency and poor adaptability of Lagrange method in the numerical simulation of aircraft icing, a fast Lagrangian algorithm for water droplet collection efficiency in complex configurations was proposed. Monte Carlo particle release statistical method was used to calculate the water droplet collection efficiency, which can significantly improve the adaptability of the algorithm to complex configurations. By using the adaptive analysis method of grid block tracking and wall impact judgment, the range of initial water droplet release array covering all impacting components can be determined. A method combining the encryption technology of grid array of water droplets along the way and the variable step acceleration technology based on error control was proposed, which can improve the calculation efficiency. Based on this method, the relationship between calculation efficiency and control variables in acceleration method was analyzed and obtained. The calculation results showed that the developed algorithm can obtain the three-dimensional water droplet collection efficiency accurately and efficiently, and can be applied to complex configurations, providing a new method and idea for calculating the collection rate of aircraft water droplets. It can also provide technical parameters for the study of aircraft icing characteristics and the design of anti-icing system. By adjusting the encryption proportional coefficient
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